Does anyone know how to remove the circuit board from a Ford Focus 3 button key fob?

I have a minor problem with mine - it is purely mechanical by the look of it.

One of the buttons has dropped off inside. Electronically, the fob still works (it is the "unlock" button that has dropped off). I have the button and I am sure I could solder it back on if I could get at it the back of the circuit board.

I don't want to force the board out as I don't want to break it ... is there a method of removing the board or is it just a "prize it out" job?

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